Conditional rules

The conditional rules module is mostly about the syntax for at-rules such as media queries, @font-face, and the like. However, it contains the @support rule which will likelye become more important over time.

@supports

These tests are only about basic support and syntax. Later on I’ll add tests for specific CSS rules, in the hope of finding out how browsers handle edge cases. (For instance, what do you do with font-style: italic when the device doesn’t have an italic font?)